Vacuum cleaner



Oct. 17, 1939. l Y D.- M, DQw 2,176,455

VACUUM CLEANER Filed 0G13. 5, 1956 l ff "mii Huw 3 4! i Immun ATTORNEY Patented Oct. 17, 1939 FFM,

aliases Y .vaccin/r Dewey M. Dow, Toledo, Qhio, assigner to Air- Way Electric Appliance Corporation, Toledo,

Ohio, a corporation of Delaware Application October 3, 1936, ,Seriai o. 103,82

2 Claims,

This invention relates to vacuum cleaners of a type in which the axes of ian and motor are separated, parallel, and horizontal and in which the fan is driven by a belt or belts travelling over l pulleys on the ian and motor shafts respectively, and the object of the invention is to provide such an arrangement in which the motor is vibration insulated 'from the body of the cleaner and from the fan casing, and yet is mounted sturdily enough l to resist the pull of the belt or belts and remain in proper alignment.

The Vinvention further aims to provide a compact arangement of the motor relative to the suction chamber casting of the cleaner, on which the motor is mounted.

Further objects will appear in the perusal of Vthe following detailed description of the invention in connection with the accompanying drawu ing in which:

Fig. l is a plan view of a vacuum cleaner embodying the invention, parts being broken away to better illustrate the construction.

Fig. 2 is a side elevation of the same, the suction chamber being shown in section,

Fig. 3 is a transverse vertical sectional view showing the motor and its mounting,

Fig. 4 is a sectional view taken on the line fi-li of Fig. 2,

Fig. 5 is a perspective view of one oi the mounting devices, and

Fig. 6 is an end view of the motor with mounting device attached.

A cleaner constructed according to my invention comprises a suction chamber it formed at its forward extremity with an agitator chamber li and atits rear extremity with a throat l2, bi-

' furcated in its rear region and attached to a pair oi elbows it, projecting upwardly and-rearwardly.

A fan casing iii has its inlets swivelled between in the elbows i3.

The upper wall i6 of the suction chamber It is formed with a downwardly curved depression Il, defined by a ridge I8 cast in the wall i6. rlhe depression ll is located rearwardly of the agitator chamber ll and forwardly of the fan casing Il. It is made as deep as is consistent with leaving ample space in the throat l2 for free ow of air therethrough.

The depression il. is deined at its ends by cross ridges 20, each formed with a pair of bosses 2|. The motor I9 is mounted upon a pair of mounting vdevices M eachl of which comprises an angle bracket 22, seated upon the cross-ridge 20 and v plate 23.

the outlets of the elbows I3 and the fan impellerr (not shown) is mounted on a shaft l5 journalled.

secured by screws 23 threaded into the bosses 2l, an arcuate metal plate 25, one side of which is welded to the vertical leg of the angle bracket 22, an arcuate block 25 of soft rubber vulcanized to the other side of the plate 2d, and a second 5 arcuate plate 26, vulcanized to the other side oi the rubber block 25. The plate 26 is secured to the end wall 21 (Fig. 4) of the motor i9 by means of screws 28 extending through openings 29 in the plate 24 and rubber 25, and openings in the lo The latter openings are just large enough to receive the threaded portions of the screws, the openings 29 being large enough to receive the heads,

The mounting devices M are slightly less than 16 a semi-circle in arcuate length, and are positioned with their rear ends higher than'their forward ends, sothat their greatest length is substantially parallelI to the belts 3B connecting the fan shaft l5 to the motor shaft Si, roughly par--v 2o allel to the belt 32 connecting the shaft 3i to the rotary agitator 33, but not as much so as it is with relation to the belts 3d which exert the greatest pull upon the motor.

The mounting devices M, being substantiallyv semi-cylindrical, and attached to the motor conf centrically with respect to the shaft 3i, give mar:- imurn resistance to torque forces and the linear forces of belt pull, with a minimum area of rubber. They embrace the bearing caps 33 of the .3@ shaft 3i so as to occupy a minimum of space.

The angle brackets-22 are arranged so that the full thickness of the mounting devices Ivi is reu ceived inside the cross ridges 2li yet the horizontal legs of the brackets project beyond the ridges g5 to give ample space for the reception of the -l screws 23. The use of vertically removable screws enables the motor and mounting devices to be detached and lifted out as a unit and makes the screws .very accessible. o

On one side of the cleaner, a partition wall 34 vis positioned directly over the cross ridge 20, its

lower edge engaging the upper edge oi the ridge. A motor cover 35 and a belt housing bottom plate 36 together coact with the partition 34 to seal 45 ofi the belt 32 from the motor space under the cover 35, so that there will be no loss of suction all types oi strain including torsional. The present invention, however, constitutes an improvementl in arrangement of such a mounting in a vacuum cleaner of the type herein described, and in the construction of the mounting so that it is adaptable to 4such arrangement.

I claim as my invention:

1. In a vacuum cleaner, a floor tool comprising an agitator chamber with an exhaust throat therefor having a depression formed in the upper wall of the throat for receiving an ,electric motor and a pair of ridges in said upper wall deilning the ends of the depression, means for mounting said motor comprising a pair of mounting devices each including an arcuate metal plate secured to a respective end of the motor, an arcuate body of rubber vulcanized to said plate, a second arcuate plate of metal vulcanized to said body of rubber, and an angle bracket secured to said second plate, said bracket including a leg projecting at right angles from said second plate,

awaits intermediate the upper and lower extremities thereof, and resting upon the portions of the suction chamber defining the ends of said depression, and means securing said legs to the suction intermediate the upper and lower extremities thereof, and resting upon the said bosses, and means securing said bracket members to the said bosses.

DEWEY M. DOW. 

